I find that a dose of the anti bacterial fairy washing up liquid works a treat! Even a mild solution on my apline strawberry has stopped the little blighters in their tracks. Hot spell in March has a lot to answer for - I've never known so many white fly so early in the season.

Hi Julier sorry but I would not advise anyone to use Fairy Liquid anywhere near their compost - or anything else they were growing for that matter. Think about your statement 'antibacterial' yet we need the bacteria in the compost to do their work... I hope you are not eating your alpine strawberries with their toxic coating of Fairy Liquid!